Marine Installation Manual 2021-08 4-101
4 Ancillary Systems
4.12 PTO, PTI, PTH and primary generator applications
X72DF
4.12 PTO, PTI, PTH and primary generator applications
WinGD proposes various power take-off (PTO) and power take-in (PTI) ar-
rangements that improve the efficiency and usability of the vessel’s propulsion
chain. Some of the proposals are even suitable as power take-home devices
(PTH), which enable the vessel to immobilise the main engine while staying ca-
pable to move. Furthermore, the primary generator enables the vessel to generate
electric power by the main engine without running the propeller.
Depending on engine design the PTO solution can be applied either in the shaft
line or at engine’s free end.
4.12.1 Requirements
After selecting the engine:
1) Define the shaft power and the shaft speed.
2) Estimate the electric power demand for propulsion purpose.
3) Evaluate which of the PTO/PTI systems is the most suitable.
4) Select suitable electrical components like frequency converter, etc.
4.12.2 Arrangements for PTO, PTI, PTH and primary generator
Figure 4-55, 4-102 illustrates the different arrangements for PTO, PTI, PTH
and primary generator.
NOTE
All given alternatives are subject to a detailed project-specific study
and definition. Please consult WinGD via their licensee.
NOTE
The type of the PTO /PTI system has an influence on the execution of
the main engine. Thus, changing from one system type to another is
possible in the project stage but not after having ordered the engine.
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